oe moberly



J. W. FAESSLER.

ROLLER TUBE EXPANDER AND FLARER.

APPLICATION FILED JULY 31,1918.

Patented Nov. 25, 1919.

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JOHN w. FAESSLER, or MOBERLY, MISSOURI, essrenon 'ro J, FAESSLER MANUFACTUR- ING COMPANY, or MOBEnLY, MISSOURI, A CORPORATION or MISSOURI.

ROLLER, TUBE EXPANDER AND FLARER.

Specification of LettersPatent. Patented NOV. 25, 1919,

Application filed July 31, 1918. SerialNo. 247,522.

To all whom it may concern:

Be it known that I, JOHN W. FAnssLnR, a citizen of the United States, and resident of Moberly, in the county of Randolph and State of Missouri, having invented certain new and useful Improvements in Roller Tube Expanders and F larers, of which the following is a specification containing full, clear, and exact description, references being had to the accompanying drawings, forming a part thereof.

My invention relates to roller tube expanders and flarers and has for its primary object to provide a roller tube expander with a flaring roller, so that the end of the tube, which is inserted in a boiler shell may be flared or made funnel shaped at the same time when the tube is being expanded.

Figure l is a longitudinal cross section of my device, showing the same applied to a boiler tube, and the method of operation of the flaring roller.

Fig. 2 is a cross section of the expander taken on the line 22 of the Fig. 1, viewing the same in the direction of the arrow.

In carrying out my invention I provide a cage 3 which is provided with a front set of three flue expanding rollers such as 4, anda rear set of two flue expanding rollers and with an expanding and flaring roller 5, all the rollers 4 being of the same construction. The flaring roller 5 is provided with a horizontal portion-6 and flared portion 7, and a cylindrical end portion 8. Cage 3 is provided with a shank 9 in which the mandrel 10 is inserted. This mandrel is provided at its outer end with a collar 11, which is held in place by means of a pin 12. The other end of the mandrel is provided with a square end 13 for the use of a wrench and with the holes 1 1, so that a bar may be used. A portion of the mandrel 10 is tapered as is indicated by the numeral 15, the object of which is to cause the rollers 4 to expand the flue. Over the tapered portion 15 of the mandrel I place collars 16 and 17, which bear against the horizontal portions 6 and 8 of the flaring roller and cause it to move outward in the same ratio as the expanding rollers. These openings in collars are of a larger diameter than the tapered portion 15 of the mandrel, so that when the mandrel is fed forward, the collars remain in their position and ride up on the tapered portion.

By the use of my device it is possible to expand tubes at two different points, in the boiler shell or water leg and at the same time flare the end which projects into such shell or leg in one operation. The cage shank 9 is provided with an adjustable collar 18, which is held in position by the set screw 19 and to this collar is rotatably affixed a second collar 20, the object of which is to allow the cage shank 9 and the cage and rollers to revolve freely without scoring the boiler shell or water leg.

When it is desired to use my device on the water leg or where the tube is to be expanded at one point only and flared, I remove the outer set of rollers and employ only the inner set. I may also make my device as a single expander, in other words, to expand the tube at one point only without departing from. the spirit of my invention.

By the use of my device a two-fold purpose is accomplished in one operation, that of expanding the tube and also flaring the projecting end. It is claimed by practical boiler makers that in flaring the end of the tube, the water in the boiler shell or water leg flows into the tube more freely and with less resistance than when the end of the tube is left square.

A collar 18 is provided with a spring ring 21, which contacts with the plug 22. This plug 22 fits into the circular recess 23 formed in .the collar 20, thereby looking it in place. In the collar 20 I form the open ing 24 so that the plug 22 may be depressed and allow the collar 20 to be removed from the collar 18 and at the same time allow free rotation between the collars 18 and 20, so that the collar 20 will not turn when the collar 18 is carried around by the shank 9.

I claim 1. A tube expander and flarer comprising a cage, a set of three expanding rollers mounted in the forward end of the cage, a set of two expanding rollers and a combined expanding and flaring roller mounted in the rear end of the cage, a hollow shank formed integral with said cage, a mandrel located in the cage and shank, collars encircling the mandrel and contacting with the ends of the flaring roller, and a V sleeve adjustably mounted on the cage shank.

2. A tube expander and flarer comprising a cage, a hollow shank formed integral therewith, a set of three expanding rollers located in the forward end of the cage, a set of two expanding and one combined ex- 'of the combined expanding and flaring roller, an adjustable sleeve mounted on the shank, and a set screw for locking said sleeve in the desired adjustment.

3. A tube expander and fiarer comprising a cage, a hollow shank formed integral therewith, a set of three expanding rollers mounted in the forward end of the cage, a set of two expanding and one combined expanding and-flaring roller mounted in the rear end of the cage, thesaid combined expanding and flaring roller being mounted between the two expanding rollers mounted in the rear end of the cage, said sets of rollers being separated ciroumferentially and longitudinally, a tapered mandrel located in the shank and cage, a pair of collars encircling the mandrel and contacting with each end of the combined expanding and flaring roller, an adjustable sleeve mounted on said shank, and a collar revolubly secured to said sleeve.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

JOHN wFA ssLER;

Witnesses: V

WVILLARD P. CAVE, L. M. PERRINE. 

